JP5898385B2 - Spacer for separating the tool from the tool stand - Google Patents

Description

  The present invention relates to a spacer for separating a tool from a tool stand, for example for separating a drill or a drill motor from the tool stand or the drill stand.

  It is known to provide a stand for supporting the tool. In particular, it is known to provide a drill stand for supporting the drill. Typically, the drill stand supports the drill and at the same time allows controlled movement in one direction (typically in the vertical direction) towards or away from the workpiece.

  In certain situations, it may be desirable to further increase the spacing between the tool and the tool stand depending on the size of the tool and tool accessories, such as a drill bit. In the prior art, this has been accomplished by providing spacers that clamp to the tool and tool stand. In this case, since two separate locking mechanisms and movements for mounting the spacers are required, the assembly is relatively troublesome.

  In a first aspect of the invention, the inventor provides a spacer for separating the tool from the tool stand, the spacer comprising a spacer body and a locking member, the spacer body having opposing first and second surfaces. The locking member extends from the first end surface adjacent to the first surface to the second end surface adjacent to the second surface, and the locking member extends from the first end surface toward the second end surface with respect to the spacer body. The first end surface and the second end surface are each provided with at least one locking surface. When the spacer applies a locking force to one of the first end surface and the second end surface, the locking force is increased. It arrange | positions so that it may be transmitted to each other lock surface of a 1st end surface and a 2nd end surface.

  Therefore, by transmitting the locking force from one surface to the other surface, the locking operation of one end surface by applying the locking force to one surface locks the other end surface of the spacer with the locking force. Make it possible. Therefore, the number or complexity of the locking mechanism can be reduced.

  The locking surface may be elongated such that it has a length that is a direction that is not parallel to the direction from the first end surface to the second end surface. Since the first end face and the second end face can be complementary, the first end face of one spacer can receive the second end face of another spacer by overlapping and running the spacer along its length, or It can be received at the second end face of another spacer. Typically this means that further spacing can be achieved because the spacers can be stacked. In such a case, the locking force is transmitted from the first end face of one spacer to the second end face of another spacer (or vice versa).

  Since the first end surface and the second end surface each have at least one corresponding tab nose and recess along the length thereof, when the first end surface and the second end surface are overlapped and run along the length, they correspond to each other. The tab nose and the recess engage each other at a given relative position of the locking surface. This allows the correct relative position of the spacer or spacer and tool or tool stand to be determined and held together properly at that position.

  The spacer may comprise at least one biasing member, such as a spring, that biases the locking member against the spacer body to engage the tab nose and the recess once they reach the relative position. As a result, the engagement between the tab nose and the recess can be improved, and the holding of the spacer in the correct position before the locking force is applied can be assisted.

  A fastener can be provided on at least one of the first end surface and the second end surface, and the stopper prevents relative movement of the first end surface and the second end surface beyond the fastener. This further increases the tendency of the spacer to be correctly positioned before the locking force is applied.

  In a second aspect of the present invention, there is provided a combination of a tool, a tool stand and a spacer according to the first aspect of the present invention, the tool stand having a locking surface complementary to each locking surface on the first end surface of the locking member. And the tool has a locking surface complementary to each locking surface on the second end surface of the locking member.

  Therefore, the locking force applied by one locking surface of the tool and the tool stand is transmitted to the other locking surface of the tool and the tool stand through the spacer, and the locking force applied to the one end surface is used at the other end surface. Being able to do so further means that the complexity of the required locking structure is reduced. The spacer can be mounted on the tool, the tool with the spacer attached can be mounted on the tool stand, and the spacer body separates the tool from the tool stand.

  At least one of the tool and the tool stand may have complementary tabs and / or recesses that match the tab noses or recesses of the first or second end face that have complementary locking surfaces. This allows the spacer to be accurately positioned with respect to the tool or tool stand.

  One of the tool and tool stand may have a locking mechanism arranged to apply a locking force to one of the locking surfaces of the spacer, typically using the locking surface of the tool or tool stand. Typically, only one of the tool and the tool stand may have a locking mechanism that is arranged to apply a locking force to one of the locking surfaces of the spacer. Therefore, only one locking mechanism is required, and the tool can be locked to the spacer and the spacer to the tool stand by one operation.

  The combination may comprise at least one other spacer according to the first aspect of the invention, wherein the spacer and each other spacer are connected sequentially, the second end face of one spacer engaging the first end face of the following spacer The spacer is attached to the tool, and the tool with the spacer attached is attached to the tool stand. For this reason, it is possible to achieve wider separation by continuously stacking the spacers, and the locking force applied to one end face is still transmitted to the opposite end face of the spacer stack.

  A third aspect of the present invention provides a method for separating a tool from a tool stand, which method uses a spacer according to the first aspect of the present invention to separate the tool from the tool stand, and then the tool and tool stand. The locking mechanism on one side of the spacer is used to apply a locking force to one of the locking surfaces of the spacer to transmit the locking force to the other locking surface of the spacer and lock the spacer against the other of the tool and tool stand. Including doing.

  Typically, the method of the present invention does not include applying a locking force to the locking surface of the spacer using a locking mechanism on the other of the tool and tool stand.

  For any of the above aspects, the tool can be a drill and the tool stand can be a drill stand. Other tools that can utilize the present invention are wall saws, tile saws and masonry saws.

In the following description of preferred embodiments, reference is made to the accompanying drawings.
FIG. 3 is a front perspective view from above of a spacer according to an embodiment of the present invention. It is a front perspective view from the bottom of the spacer of FIG. It is a disassembled side perspective view of the spacer of FIG. FIG. 2 is an exploded perspective view of the spacer of FIG. 1 used with a drill motor and a drill stand. FIG. 5 is an exploded view from above of the engagement of the spacer, drill and drill stand of FIG. 4. FIG. 5 is a non-decomposed enlarged view of the engagement of the spacer, drill and drill stand of FIG. 4. It is a top view of the laminated body of the spacer of FIG.

  The present invention will be described more fully hereinafter with reference to the accompanying drawings. The drawings illustrate example embodiments of the invention that incorporate one or more aspects of the invention. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. For example, one or more aspects of the present invention can be utilized in other embodiments, as well as other types of devices. In the drawings, like numerals represent like elements.

  A spacer 1 according to an embodiment of the invention is shown in the accompanying drawings. The spacer 1 includes a body 2 that separates the first surface 4 from the second surface 5, and the first surface 4 and the second surface 5 are parallel to each other.

  The body supports the mooring lock member 3, and the mooring lock member 3 is perpendicular to the first surface 4 and the second surface 5 with respect to the body, along the direction from the first surface 4 to the second surface 5. Can be moved. The lock member 3 is biased by a spring 8 acting between the plate 9 fixed to the body and the lock member 3, and the spring 8 tends to bias the lock member toward the first surface 4. is there. The locking member 3 has two main parts: a groove part 17 and a wedge part 18, which are integrated by a screw 14 fastened in a hole 14a. Thereby, the mobility of the lock member 3 is limited.

  The locking member 3 has a first end surface 6 adjacent to the first surface 4 and a second end surface 7 adjacent to the second surface 5. The first end surface 6 protrudes from the first surface 4. The first end face 6 is generally elongated and has an isosceles trapezoidal profile cross section with unequal parallel sides, the shorter of the trapezoidal parallel sides being closest to the second surface 5. The second end face 7 has a corresponding shape and has an elongated trapezoidal groove that can receive the first end face 6. For this reason, the 1st end surface of a certain spacer 1 can be received by the 2nd end surface 7 (or the corresponding recessed part of the tool or tool stand mentioned later) of another spacer.

  In order to control the movement of one spacer 1 relative to the other, there are two mechanisms that limit such movement. The first is a pin 19 that blocks the end face of the trapezoidal groove, and functions as a fastener (stopper) that prevents the two parts from moving relative to each other beyond the pin 19. This fastener (first) can prevent the drill motor from falling. However, the second fastener may also be advantageous in preventing the drill motor from being accidentally lifted from the drill stand. This problem can be solved by a second fastener that is easily removable. Such a fastener may be arranged, for example, to block the other end of the trapezoidal groove away from the pin 19. However, there are more sophisticated solutions. The first end surface 6 may be provided with a set of recesses 12 on both sides of the first end surface 6 that are not parallel. The second end face has a set of tab noses 13 a that match these recesses 12. When the first part (first end face) 6 slides along the second part (second end face) 7 to the position where the tab nose 13a is located on the recess 12, the lock member 3 is moved by the action of the spring 8, and the tab nose 13a is moved. It fits into the recess 12. This limits further relative movement of the parts involved in either direction. This is because the tab 13 is not released from the recess 12 unless the lock member 3 is manually moved to remove the recess 12 from the tab nose 13a. If there are two fasteners, the complementary surfaces 11, 10 can be perfectly flat. When the two complementary surfaces are brought into close contact, the spacer is pressed against both the drill stand and the drill motor. However, if the surfaces 11, 10 are provided with a plurality of tab noses 13 a and a plurality of recesses 12 that are not completely flat, they engage with each other. Each tab nose 13a has at least one, preferably two tab edges 13b. When an attempt is made to push the spacer along the groove running in the direction 15, 16, the tab edge 13b engages with the recessed edge 12a and the movement stops. As shown in FIGS. 1 and 3, the tab nose 13a and the tab edge 13b are part of the separated tab 13 that is fastened to the hole 13d with a screw 13c. However, it will be appreciated that this structure could alternatively be formed from a single part by casting or machining.

  The use of this spacer is illustrated by example in FIGS. 4-6 of the accompanying drawings. In these figures, the spacer 1 is used to separate the drill 30 from the drill stand 20.

  The drill motor 30 is provided with a tongue 32 having a trapezoidal cross section, and the tongue is complementary to the groove of the spacer 1. The tongue 32 has a recess 33 that matches the tab nose 13a on the second end face 7 of the spacer. When the tongue 32 is inserted into the groove of the spacer 1, the tab nose 13a engages with the recess 33, This means that the spacer 1 is held against the drill motor.

  The drill stand 20 is provided with a trapezoidal groove that can receive the first end face 6. Since the groove has a tab nose 21a similar to the second end surface, when the spacer 1 is slid with respect to the drill stand 20, the spring 8 fits the recess 12 into the tab nose 21a, and the tab nose 21a is in the first end surface. 6 is engaged with the recess 12 on the top. Thereby, the drill motor 30 to which the spacer 1 is attached can be temporarily held with respect to the drill stand 20.

  Once the drill motor 30, the spacer 1 and the drill stand 20 are temporarily held at predetermined positions, it is necessary to lock them at the predetermined positions. Therefore, the tab nose 21a of the drill stand can be driven vertically into the recess 12 of the spacer using the lock mechanism 23. This is better done by moving the wheel 24 (FIG. 6) relative to the grip 23 and tightened. Then, the spacer 1 is tightened toward the drill stand 20, and the drill motor 30 is tightened with respect to the spacer 1.

  When the tab nose 21a is driven in this way, the tab nose contacts the recess 12. Since the tab nose 21a and the locking surface 10 of the recess 12 each constitute a part of the non-parallel side of the trapezoidal outline, the locking force on the locking surface 10 is formed by the surface of the tab nose 21a. When applied, it drives the first end face 6 away from the first face 4 in the drill stand 20 and drives the locking member along its allowed direction of movement.

  This in turn causes the second end surface 7 to move in the direction of the first surface 4, and a force is applied to the locking surface of the recess 33 in the tongue piece 32. For this reason, the drill stand 20 can be locked to the spacer 1 and the spacer 1 can be locked to the drill motor 30 with one lock mechanism 23.

  If it is desired to further separate the drill 30 from the drill stand 20, a plurality of spacers 1a, 1b can be connected in series as shown in FIG. 7 of the accompanying drawings. The first end face 6b of a certain spacer 1b is received in the second end face 7a of the adjacent spacer 1a. When connected between the appropriate drill stand 20 and the drill motor 20, the locking force applied by the tab 21 is still transmitted to the tongue 32 via the locking member 3 and all members are locked. If these at least two spacers have different heights, i.e. the distance between the first surface 4 and the second surface 5 is different, a number of different separations can be achieved. If one or two spacers are used and have a height of 50 mm and 75 mm, respectively, a number of different spacings such as 50, 75, 100, 125, 150 mm can be achieved.

Claims (13)

A spacer (1) comprising a spacer body (2) and a locking member (3) for separating the tool and tool accessory (30) from the tool stand (20), wherein the spacer body (2) The locking member (3) has a first surface (4) and a second surface (5) facing each other, and the locking member (3) is disposed on the second surface (5) side from the first locking portion (6) on the first surface (4) side . extending integrally to the second locking part (7), the locking member (3) is along the first locking part (6) in a direction toward the second locking part (7) slide with respect to the spacer body (2) Each of the first lock part (6) and the second lock part (7) is provided with at least one lock surface (10, 11),
The spacer (1) is one of the lock surface of the first locking part (6) and the second locking part (7) (10, 11) is a spacer body (2) and the lock member (3) between the locking force by the urging of, arranged so that heat transfer example in the first locking part (6) and the other of each locking surface of the second locking section (7) (10, 11),
The first locking part (6) and the second locking part (7) have a trapezoidal locking surface (10) or a corresponding trapezoidal groove locking surface (11) and are complementary to each other, so The first locking part (6) of one spacer (1) runs along the length of each other, i.e. in the longitudinal direction (15, 16), so that the second of the other spacer (1) is second. A spacer (1) that receives or is received by a locking part (7), a trapezoidal tongue (32) in cross section of the tool and tool accessory (30), or a trapezoidal groove of the tool stand (20 ). Each of the lock surfaces (10, 11) is extended so as to have a predetermined length in a direction not parallel to the direction from the first lock portion (6) to the second lock portion (7). The spacer according to claim 1. The first locking part (6) and the second locking part (7) each have at least one corresponding tab nose (13a) and recess (12) along their length, so that the first locking part (6 ) And the second locking part (7) run along their length with respect to each other, each corresponding tab nose (13a) and recess (12) with respect to each other in a given relative position of the locking surface (10, 11). The spacer according to claim 2 , wherein the spacer is engaged with the spacer. At least one corresponding tab nose (13a) has at least one tab edge (13b) and at least one recess (12) has at least one recess edge (12a), so that the tab nose (13a) and the recess ( When 12) engage with each other, sliding movement in at least one longitudinal direction (15, 16) is hindered by at least one tab edge (13b) that engages one recess edge (12a). Item 4. The spacer according to item 3 . At least one biasing member (8) is provided, and the biasing member (8) biases the locking member (3) with respect to the spacer body (2), so that at least one tab nose (13a) and recess (12) The spacer according to claim 3 or 4 , wherein the spacer is engaged once the relative position is reached. A fastener (19) is provided on one of the first lock portion (6) and the second lock portion (7), and the fastener (19) is a fastener by the first lock portion (6) and the second lock portion (7). The spacer according to any one of claims 1 to 5 , which prevents relative movement beyond (19). The tool stand (20) has a locking surface (21) complementary to each locking surface on the first locking part (6) of the locking member (3), and the tool and tool accessory (30) are locked Tool and tool accessory (30), tool stand (20) and tool stand (30) having a locking surface (31) complementary to each locking surface (11) on the second locking part (7) of the member (3) The combination apparatus of the spacer (1) as described in any one of 1-6 . The tool stand (20) has a locking surface (21) complementary to each locking surface on the first locking part (6) of the locking member (3), and the tool and tool accessory (30) are locked Tool and tool accessory (30), tool stand (20) and tool stand (30) having a locking surface (31) complementary to each locking surface (11) on the second locking part (7) of the member (3) The spacer (1) combination device according to any one of 3, 4, and 5,
At least one of the tool and the tool accessory (30) and the tool stand (20) has a tab nose (1) of the first lock portion (6) or the second lock portion (7) having a complementary lock surface (10, 11). 13a) or a combination device having complementary tab noses and / or recesses that match the recesses (12). A locking mechanism (1) in which one of the tool and the tool accessory (30) and the tool stand (20) applies a locking force to one of the locking surfaces (10, 11) of the spacer (1). 23) The combination device according to claim 7 or 8 , comprising: 23). The spacer (1) is attached to the tool stand (20), the tool and tool accessory (30) are attached to the spacer (1), and the spacer body (2) separates the tool (30) from the tool stand (20). The combination device according to any one of claims 7 to 9 . The at least one other spacer (1b) according to any one of claims 1 to 6, further comprising a spacer (1a) and the another spacer (1b) connected in succession, the spacer (1a) The second lock portion (7) of the second engagement portion engages with the first lock portion (6) of the subsequent spacer (1b), and the spacer (1a, 1b) is attached to the tool and the tool accessory (30). The combination device according to any one of claims 7 to 10 , wherein the tool and the tool accessory (30) to which the spacers (1a, 1b) are attached are attached to the tool stand (20). 12. The combination device according to any one of claims 7 to 11 , wherein the tool and tool accessory (30) is a drill motor (30) and the tool stand is a drill stand (20). A method of separating the tool and tool accessory (30) from the tool stand (20), the method comprising:
Separating the tool (30) from the tool stand (20) using the spacer (1) according to any one of claims 1 to 6 ;
Next, the locking mechanism (23) in one of the tool stand (20) of the tool and the tool accessory (30) and the tool stand (20) is used, and the locking force is applied to the locking surface (10 of the spacer (1)). 11) in addition to one of the other of the spacer (1) so that the spacer (1) locks against the other of the tool and the tool accessory (30) and the tool stand (20). And communicating to the locking surfaces (10, 11).

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